Synthesis of New Substituted Purines and [1,2,4] Triazolo- [3,4-i]purine Derivatives

TREATMENT of the 6-hydrazinopurine derivative 2a with. is ……. othiocyanates followed by chloroacetyl chloride afforded, the1,3-thiazolidine-2,4-dione-2-[9-aryl-9H-purin-6-yl] hydrazones (5). Moreover, the 2-substituted [1,2,4]triazolo[3,4-i]purines 9 and 10 were synthesized by reacting 2a with aldoses and cyclizing the obtained product.